Answer:
Same direction: t=234s; d=6.175Km
Opposite direction: t=27.53s; d=0.73Km
Explanation:
If the automobile and the train are traveling in the same direction, then the automobile speed relative to the train will be  (<em>the train must see the car advancing at a lower speed</em>), where
 (<em>the train must see the car advancing at a lower speed</em>), where  is the speed of the automobile and
 is the speed of the automobile and  the speed of the train.
 the speed of the train.
So we have  .
.
So the train (<em>anyone in fact</em>) will watch the automobile trying to cover the lenght of the train L at that relative speed. The time required to do this will be:

And in that time the car would have traveled (<em>relative to the ground</em>):

If they are traveling in opposite directions, <u>we have to do all the same</u> but using  (<em>the train must see the car advancing at a faster speed</em>), so repeating the process:
 (<em>the train must see the car advancing at a faster speed</em>), so repeating the process:



 
        
             
        
        
        
Energy travels with sound waves.
        
                    
             
        
        
        
Answer:

Explanation:
*Assume the parallel disks have equal diameters.
Given the electric strength as   transferring
  transferring  electrons, the disk's Area can be calculated using the formula:
 electrons, the disk's Area can be calculated using the formula:

#We now calculate the disks diameter:

Hence, the diameter of the disks is 
 
        
             
        
        
        
B-Pitcher C-Catcher H-Strike I-Umpire G-Strike Zone E- Foul Ball F- Ball J- Pick-off D-Error A- Shortstop. I think (Sorry for them being out of order. I had to break them down)